scholarly journals Status Kesuburan Tanah Berdasarkan Aspek Kimia dan Fisik Tanah di DAS Wai Ela, Negeri Lima, Kabupaten Maluku Tengah, Provinsi Maluku

2019 ◽  
Vol 15 (1) ◽  
pp. 1-12
Author(s):  
Hetti May Rini Pintu Batu ◽  
Silwanus M Talakua ◽  
Adelina Siregar ◽  
Rafael M Osok

Soil fertility problems in Wai Ela Negeri Lima are caused by 1) natural factors such as geology, soil, topography, and land uses; 2) land management system, such as shifting cultivation and deforestation; and (3) land degradation due to a natural disaster such as the fast flood in Wai Ela watershed. The objectives of the study were 1) to study soil chemical and physical characteristics of Wai Ela watershed; 2) to determine the soil fertility status of Wai Ela watershed; and 3) to provide some recommendations to improve the soil fertility. Soil properties used in determining soil fertility status included CEC, BS, C-organic, available P2O5, N-total, pH, soil depth, soil textures, and soil permeability rates. The soil fertility status was determined by using PPT’s criteria. Data preparation and analysis were conducted by using Geographic Information System. The study results showed that the soil fertility status of Wai Ela watershed ranged from the low-class 217.74ha (14.50%) to medium class 899.56 ha (60.21%) and high-class 303.35ha (20.31%). The recommended soil fertility status improvements in Wai Ela include balanced-fertilization management, increasing soil organic matter by applying manure and compost at soil tillage stage, neutralizing the soil pH and applying irrigation water management. Keywords: chemical and physical aspects, Negeri Lima, soil fertility, Wai Ela Watershed   ABSTRAK Masalah kesuburan tanah di DAS Wai Ela Negeri Lima disebabkan oleh: 1) faktor alami yaitu geologi, jenis tanah, topografi dan penggunaan lahan; 2) pola pemanfaatan lahan, yaitu perladangan berpindah dan penebangan hutan; dan 3) degradasi lahan akibat bencana alam berupa banjir bandang di danau Wai Ela. Penelitian ini bertujuan untuk: 1) Mengkaji data kimia dan fisika tanah di DAS Wai Ela; 2) Menetapkan status kesuburan tanah di DAS Wai Ela; dan 3) Menentukan arahan perbaikan kesuburan. Sifat kimia tanah yang berpengaruh terhadap penetapan status kesuburan tanah adalah KTK, KB, C-organik, P2O5 tersedia, N total dan pH tanah. Sifat fisika tanah seperti kedalaman tanah, tekstur dan laju permeabilitas tanah. Penentuan status kesuburan tanah ditetapkan berdasarkan kriteria penentuan tingkat kesuburan tanah PPT (1983) dan kriteria kombinasi kesuburan fisika tanah (Sitorus, 1985). Tahap persiapan sampai pengolahan data status kesuburan tanah adalah berbasis SIG. Hasil penelitian menunjukkan bahwa status kesuburan tanah total pada lokasi penelitian yaitu kelas rendah 216,74 ha (14,50%), kelas sedang 899,56 ha (60,21%) sampai kelas tinggi 303,35 ha (20,31%). Arahan perbaikan kesuburan tanah di DAS Wai Ela adalah manajemen pemupukan berimbang, penambahan bahan organik (pupuk kandang, pupuk hijau) pada tahapan pengolahan tanah, manajemen pH tanah yang sesuai dan pengaturan air irigasi yang tepat. Kata kunci: aspek kimia dan fisik, DAS Wai Ela, kesuburan tanah, Negeri Lima

2005 ◽  
Vol 25 (4) ◽  
pp. 69-92 ◽  
Author(s):  
J. O. Fening ◽  
T. Adjei-Gyapong ◽  
E. Yeboah ◽  
E. O. Ampontuah ◽  
G. Quansah ◽  
...  

2015 ◽  
Vol 9 (32) ◽  
pp. 863-866
Author(s):  
Deivasigamani S ◽  
K Thanunathan ◽  
M Kathiresan R ◽  
Sudhakar M ◽  
Bharathi Karthikeyan B

2017 ◽  
Vol 12 (18) ◽  
pp. 1538-1546 ◽  
Author(s):  
Watanabe Yoshinori ◽  
Itanna Fisseha ◽  
Fujioka Yuichiro ◽  
Ruben Shou ◽  
Iijima Morio

Jurnal Solum ◽  
2007 ◽  
Vol 4 (1) ◽  
pp. 5
Author(s):  
Syafrimen Yasin ◽  
Gusnidar Gusnidar ◽  
Dedy Iskandar

A research conducted in Sungai Rumbai, Dharmasraya Regency and in Soil Laboratory Andalas university was aimed to evaluate soil fertility status on the depth below 0-20 cm from several land use types , especially under Mixed Garden and annual cultivated dryland soil.  Soil samples were taken on Ultisol at 0-8% slope (late-waving soil surface).  Land use types evaluated were forest, annual cultivated dryland, bush land, rangeland covered by Imperata cylindrica and mixed garden.  Composite soil samples for soil chemical analysis were taken on the 0-20 cm soil depth with four replications, and 5 drillings for each replication.  Undisturbed soil samples by using sample ring were used to analyze sol bulk volume.  The data resulted were compared to the criteria and were statistically tested using Analysis of Variance and then were continued by LSD at 5% level.  From the results of analyses could be concluded that land use  for mixed garden had the higher Organic Carbon (OC) content and the lower bulk volume (BV) than those for annual cultivated dryland soil.Key Words: Degradasi Lahan, Kebun Campuran, Tegalan


Author(s):  
Gebeyaw Tilahun Yeshaneh

The study was conducted at the Abuhoy Gara Catchment, which is located in the Gidan District of North Wello Zone. The aim of the study was to study farmers’ perceptions about the effect of farm land management practices and soil depth on the distribution of major soil physico-chemical properties in eroded soils of Aboy Gara watershed. To address this issue, semi-structured interviews were conducted in 64 households to gain insight into soil fertility management practices, local methods were used to assess the fertility status of a field, and perceived trends in soil fertility. Thirty-three farmers were then asked to identify fertile and infertile fields. According to farmers response, farmers’ fields were characterized as fertile where it comprise black color, cracks during dry season, good crop performance, vigorous growth of certain plants and presence of plants in a dry environment whereas the infertile is where it shows yellow/white and red colors, compacted soils, stunted plant growth, presence of rocks and stones and wilting or dying of crops in a hot environment. A total of eight indicators (soil color, texture, soil depth, topography, soil drainage, and distance from home, type of weeds grown and cultivation intensity) were found to be used by farmers to evaluate and monitor soil fertility. The results of administered questions showed that the principal indicators mentioned by farmers as very important were soil colour (82.8%), continuous cropping land (72.2%), soil texture (62.8%), distance from home (61%), type of weeds grown (56%), soil depth (55.6%), topography (51.1%), and soil drainage (28.7%) as very important. So, among sixty four interviewed farmers: deep soil (60 farmers), soils near to home (60 farmers), forest soil (59 farmers), smooth fine soil (59 farmers), black color soil (58 farmers) and gentle slope soil (57farmers) are categorized as fertile whereas 59, 57, 56, 55, and 44farmers said that Sandy/coarse soil, shallow soil depth, steep slope soils and yellow/white, red soils and continuously cultivated soils are infertile, respectively. The overall result showed that there was good agreement between farmers’ assessment of the soil fertility status of a field and a number of these indicators. The soil laboratory analysis also corresponded well with farmers’ assessment of soil fertility. Therefore, to design more appropriate research and to facilitate clear communication with farmers, researchers need to recognize farmers’ knowledge, perceptions about assessments of soil fertility. Because, as they included all soil factors affecting plant growth, farmers’ perceptions of soil fertility were found to be more long term day-to-day close practical experience finding than those of researchers.


2021 ◽  
Vol 12 (5) ◽  
pp. 348-360
Author(s):  
Rajendra Hegde ◽  
◽  
Mahendra Kumar ◽  
M. B. Niranjana K. V. ◽  
Seema, K. V. ◽  
...  

An investigation was under taken to study the soil fertility status of major nutrients, micronutrients and mapping in Ramasamudram-1 microwatershed of Yadgir taluk and district of Karnataka, India during the year 2019. Total seventy-four grid wise surface soil samples were collected at 320 m grid interval at 0-15 cm depth to assess the soil parameters (texture, pH, EC, OC, available P, K, S, Zn, Cu, Fe, Mn and B) and prepare the soil fertility maps through GIS using Kriging method. The results of the study indicated that, the texture of the soil varied from loamy sand to sand clay loam in surface. Soil reaction varied from acidic to neutral with non-saline in nature. The distribution of soil organic carbon (32%), available phosphorous (56%) and potassium (47%) status was found to be medium in most of the area of microwatershed. The available sulphur status was found to be low (57%) in maximum area of the microwatershed. The available zinc status was found to be sufficient (46%) in majority area of the microwatershed. The available copper, iron and manganese status of the soils were sufficient (58%) in entire area. Whereas available boron status was found to be low (57%) in maximum area of the microwatershed. Therefore, the study showed that, the soils of the microwatershed were medium in fertility status. There is need of proper fertilizer recommendation and soil management practices can be made productive thereby, increasing the crop yield.


2020 ◽  
Vol 7 ◽  
pp. 43-53
Author(s):  
Bishal Gnyawali ◽  
Umesh Kumar Mandal ◽  
Ishwor Aryal

Soil fertility assessment is a very fundamental task for farmers and agricultural planners to adopt appropriate fertility management practices, to recommend applying lacking fertilizers, to make fertility-based agricultural plans,s and to produce a large number of crops in their land. This study assesses the soil fertility status of Sainamaina Municipality, ward no. 5-9, Rupandehi district based on soil sample data collected from the field. Soil test based fertility assessment, calculation of overall fertility of area using fertility index, and preparation of soil fertility map is carried out. As soil fertility, the status of total nitrogen (TN), phosphorus (P2 O5), potassium (K), organic matter (OM), and soil pH are measured. As a result, the status of TN, (K2 O), and OM is found low, the status of (P2 O5 ) is found high and soil pH is found in range of very strongly acidic to slightly alkaline.


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